Photovoltaic-Assisted Self-Vth-Cancellation CMOS RF Rectifier for Wide Power Range Operation

被引：0

作者：

Usami, Ren ^{[1
]}

Komiyama, Takao ^{[2
]}

Chonan, Yasunori ^{[2
]}

Yamaguchi, Hiroyuki ^{[2
]}

Kotani, Koji ^{[2
]}

机构：

[1] Akita Prefectural Univ, Grad Sch Syst Sci & Technol, Akita, Japan

[2] Akita Prefectural Univ, Fac Syst Sci & Technol, 84-4 Aza Ebinokuchi, Yurihonjo City 0150055, Japan

来源：

2018 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC): PROCEEDINGS OF TECHNICAL PAPERS | 2018年

关键词：

energy harvesting; photovoltaic; radio waves; rectifier;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this study, a photovoltaic (PV)-assisted self-Vthcancellation CMOS RF rectifier for energy harvesting from ambient radio waves was developed. Because the threshold voltage (Vth) of MOSFETs in the rectifier was effectively compensated for by a DC bias voltage generated from not only the on-chip PV cells but also the output voltage of the rectifier itself, the power conversion efficiency (PCE) under low input power conditions was improved. In addition, a bias voltage limiting mechanism was newly adopted to appropriately suppress the excess bias voltage for Vth compensation and to improve the PCE under high input power conditions. As a result, the rectifier operates with a higher efficiency than previously reported rectifiers over a wide input power range, from as low as 25 dBm to higher input power without degradation of the PCE.

引用

页码：115 / 118

页数：4

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